Optimal joint cutting of two-qubit rotation gates

• URL: http://arxiv.org/abs/2312.09679v2
• Date: Thu, 6 Jun 2024 08:58:34 GMT
• Title: Optimal joint cutting of two-qubit rotation gates
• Authors: Christian Ufrecht, Laura S. Herzog, Daniel D. Scherer, Maniraman Periyasamy, Sebastian Rietsch, Axel Plinge, Christopher Mutschler,
• Abstract summary: We introduce a scheme for joint cutting of two-qubit rotation gates based on a virtual gate-teleportation protocol. We show that no classical communication between the circuit partitions is required.
• Score: 2.4646794072984477
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Circuit cutting, the partitioning of quantum circuits into smaller independent fragments, has become a promising avenue for scaling up current quantum-computing experiments. Here, we introduce a scheme for joint cutting of two-qubit rotation gates based on a virtual gate-teleportation protocol. By that, we significantly lower the previous upper bounds on the sampling overhead and prove optimality of the scheme. Furthermore, we show that no classical communication between the circuit partitions is required. For parallel two-qubit rotation gates we derive an optimal ancilla-free decomposition, which include CNOT gates as a special case.

Related papers

• A diverse set of two-qubit gates for spin qubits in semiconductor quantum dots [5.228819198411081]
  We propose and verify a fast composite two-qubit gate scheme to extend the available two-qubit gate types. Our gate scheme limits the parameter requirements of all essential two-qubit gates to a common JDeltaE_Z region. With this versatile composite gate scheme, broad-spectrum two-qubit operations allow us to efficiently utilize the hardware and the underlying physics resources.
  arXiv  Detail & Related papers  (2024-04-29T13:37:43Z)
• Fast ZZ-Free Entangling Gates for Superconducting Qubits Assisted by a Driven Resonator [42.152052307404]
  We propose a simple scheme to cancel stray interactions between qubits. We numerically show that such a scheme can enable short and high-fidelity entangling gates. Our architecture is not only ZZ free but also contains no extra noisy components.
  arXiv  Detail & Related papers  (2023-11-02T15:42:02Z)
• Efficient two-qutrit gates in superconducting circuits using parametric coupling [0.0]
  We present a protocol to implement the universal gate for two qutrits based on a decomposition involving two partial state swaps and local operations. This protocol has the potential to lead to fast and scalable two-qutrit gates in superconducting circuit architectures.
  arXiv  Detail & Related papers  (2023-09-11T18:49:51Z)
• Pairwise-parallel entangling gates on orthogonal modes in a trapped-ion chain [0.0]
  parallel operations are important for both near-term quantum computers and larger-scale fault-tolerant machines. We propose and implement a pairwise-parallel gate scheme on a trapped-ion quantum computer. We demonstrate the utility of this scheme by creating a GHZ state in one step using parallel gates with one overlapping qubit.
  arXiv  Detail & Related papers  (2023-02-17T21:12:14Z)
• Fast and Robust Geometric Two-Qubit Gates for Superconducting Qubits and beyond [0.0]
  We propose a scheme to realize robust geometric two-qubit gates in multi-level qubit systems. Our scheme is substantially simpler than STIRAP-based gates that have been proposed for atomic platforms. We show how our gate can be accelerated using a shortcuts-to-adiabaticity approach.
  arXiv  Detail & Related papers  (2022-08-08T16:22:24Z)
• High fidelity two-qubit gates on fluxoniums using a tunable coupler [47.187609203210705]
  Superconducting fluxonium qubits provide a promising alternative to transmons on the path toward large-scale quantum computing. A major challenge for multi-qubit fluxonium devices is the experimental demonstration of a scalable crosstalk-free multi-qubit architecture. Here, we present a two-qubit fluxonium-based quantum processor with a tunable coupler element.
  arXiv  Detail & Related papers  (2022-03-30T13:44:52Z)
• A two-qubit entangling gate based on a two-spin gadget [5.654768236043155]
  Two-qubit gate with flux bias control is an important candidate for future large-scale quantum computers. We build a CNOT-equivalent gate which can reach a fidelity larger than 99.9% within 40ns. The two-qubit entangling gate scheme is suitable for realizing efficient two-qubit gates in the large scale flux qubit systems.
  arXiv  Detail & Related papers  (2022-01-15T18:15:00Z)
• Software mitigation of coherent two-qubit gate errors [55.878249096379804]
  Two-qubit gates are important components of quantum computing. But unwanted interactions between qubits (so-called parasitic gates) can degrade the performance of quantum applications. We present two software methods to mitigate parasitic two-qubit gate errors.
  arXiv  Detail & Related papers  (2021-11-08T17:37:27Z)
• Realization of arbitrary doubly-controlled quantum phase gates [62.997667081978825]
  We introduce a high-fidelity gate set inspired by a proposal for near-term quantum advantage in optimization problems. By orchestrating coherent, multi-level control over three transmon qutrits, we synthesize a family of deterministic, continuous-angle quantum phase gates acting in the natural three-qubit computational basis.
  arXiv  Detail & Related papers  (2021-08-03T17:49:09Z)
• Scalable quantum computation with fast gates in two-dimensional microtrap arrays of trapped ions [68.8204255655161]
  We investigate the use of fast pulsed two-qubit gates for trapped ion quantum computing in a two-dimensional microtrap architecture. We demonstrate that fast pulsed gates are capable of implementing high-fidelity entangling operations between ions in neighbouring traps faster than the trapping period.
  arXiv  Detail & Related papers  (2020-05-01T13:18:22Z)
• Universal non-adiabatic control of small-gap superconducting qubits [47.187609203210705]
  We introduce a superconducting composite qubit formed from two capacitively coupled transmon qubits. We control this low-frequency CQB using solely baseband pulses, non-adiabatic transitions, and coherent Landau-Zener interference. This work demonstrates that universal non-adiabatic control of low-frequency qubits is feasible using solely baseband pulses.
  arXiv  Detail & Related papers  (2020-03-29T22:48:34Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.